Number of the day

300,000

That's how many tweets were posted about Sunday night's premiere of the returning series "Game of Thrones" on HBO. Fans of the dragon-filled fantasy drama beat out the buzz on Twitter generated by "Silicon Valley," the satirical comedy about Bay Area tech life that debuted on the network after "Thrones," and generated 9,000 tweets, according to Nielsen.

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"I now have Apple board members asking 'what is going on with advertising and what are you doing to fix it.' "

Philip Schiller, Apple's senior vice president of marketing, in an e-mail last year to the company's ad agency TBWA/Chiat/Day, amid concerns about slowing iPhone sales as Samsung targeted Apple with negative advertising, and competitors offered less expensive and bigger-screen phones. The e-mail was among documents shared with the jury Friday at the $2 billion patent trial between Apple and Samsung.

Heads up

The Marketo Marketing Nation Summit runs through Wednesday at Moscone Center. With more than 3,500 marketers expected to attend, it offers numerous networking opportunities. There will be keynote speeches by former Secretary of State Hillary Rodham Clinton and GE Chief Marketing Officer Beth Comstock. Sessions will cover topics including campaign management, social media strategies and analytics.